The pim state-refresh-capable command enables PIM-DM state refresh on an interface.
The undo pim state-refresh-capable command disables PIM-DM state refresh.
By default, PIM-DM state refresh is enabled.
GE interface view, XGE interface view, MultiGE interface view, 25GE interface view, 40GE interface view, 100GE interface view, Eth-Trunk interface view, GE sub-interface view, XGE sub-interface view, MultiGE sub-interface view, 25GE sub-interface view, 40GE sub-interface view, 100GE sub-interface view, Eth-Trunk sub-interface view, VLANIF interface view, loopback interface view, tunnel interface view
Usage Scenario
PIM-DM state refresh is implemented by periodically sending State-Refresh messages in the network. After receiving a State-Refresh message, the switch in the pruned state resets the prune-status timer, preventing the downstream interface from forwarding packets.
After PIM-DM state refresh is disabled on an interface, the interface starts to forward multicast data when the prune timer expires. The downstream routers that do not want to receive the data send Prune messages. The process repeats, wasting a lot of network resources. Enabling PIM-DM state refresh can reduce traffic on the network.
Prerequisites
IP multicast routing has been enabled using the multicast routing-enable command in the public network instance or VPN instance.
Precautions
This command is valid for only PIM-DM.
<HUAWEI> system-view [HUAWEI] multicast routing-enable [HUAWEI] interface vlanif 100 [HUAWEI-Vlanif100] undo pim state-refresh-capable
<HUAWEI> system-view [HUAWEI] multicast routing-enable [HUAWEI] interface gigabitethernet 0/0/1 [HUAWEI-GigabitEthernet0/0/1] undo portswitch [HUAWEI-GigabitEthernet0/0/1] undo pim state-refresh-capable